Friction draft-riggina for railway-cars.



J. F. OGONNOR. FRICTION DRAFT RIGGING FOR RAILWAY CARS.

.APPLICATION FILED FEB. 15, 1907.

Patented Jan. 12,1909.

WITNESSES:

A TTORNE YJ Mfg@ y vice, an

NETE@ ilfrtfl PATENT @Flfly JOHN F. OCONNOR, OF CHlGAGO, ILLINOIS, ASSIGNOR rl/O W. H. MINER COMPANY, OF CEC,

ILLINOIS, A CORPORATION OF ILLINOIS.

FBICTION DRAFT-BIGGER@ .FOR RAILWAYLES.

Specification of flitsers Patent.'

Patented Jan. 12, 190,9.

Application sled rebniary i5, 1907. serial no. 357,528.

To all whom it may concern:

Be it known that l, Jenn F. OConivon, a`

l citizen of the United States, residing in Chi# cago, in the county of Cook and State of Illinois, `have invented a new and useful lmprovenient in vFriction Draftv- Rigging for `ftailivay-Cars, of yvhich the following is a f draft rigging ofA a simple, strong, safe, eflicientf and durable construction, having both a directacting spring cushioning member longitudinally arranged in the line of the draw- 1 bar, and also frictional cushioning devices With longitudinally extending friction faces parallel to the draw-bar and cooperating With the direct acting longitudinally arranged s ring and a Wedge or spreader dc by means of which the tendency, andrby which the objections heretofore experienced from the Wedge and friction devices sticking and acting with uncertainty and irregularity, and thus reducingv the effective cushioning action of the friction def the interiorii'iction vices may be in any Way interfering `With the strength, efficiency, durability and reliability of the draft rigging as a Whole. p

My .invention consists in the means l ein- `ploy to practically accomplish this object or result.- That 'is to say, it consists in connection with the draw-bar and its yolre, and the coperating stationary stops or stop castings on the car frame or sills, of a direct acting longitudinally arranged s ring, a longitudinally movable friction she fitting 'within the drawbar yoke and having a longitudinally extending interior friction face or faces, a lurality of cooperating friction blocks having longit'ndinallyextending exterior friction faces in sliding frictional engagement with face or faces ofthe fric tion. sliell and arranged in the line of the drawebar vand acted upon by the longitudi nally arranged direct acting draft rigging spring; acOperatin wedge orspreader device ,'aving incline or Wedging faces coo erating'with inclined or Wedging vfaces on t 'e longitudinally'movahle friction blocks, said Wedge being interposed between the draw-bar and the friction blocks, anti-fricM tion rollers iinterpesed lmtween the incline or vvedgingmfacesy of the frictionmvblocks and practically overcome Without blocks having cooperating shoulders to keep the anti-friction rollers in place, Whenvthe direct acting spring is expanded and the Wedge and friction blocks retracted or separated, said shoulders at the same time pcr` initting the rollers to turn freely as `antifriction rollers when the Wedge and friction blocks move to or from' each other, vso that all tendency of the friction devices to stickwill be prevented, and so that the action of the friction devices will be certain and reliable the Wedge, said Wedge and said friction both when the spring is compressed and y when it releases or expands en -removal of the load.

My invention further consists in the novel, l,

construction of parts and devices and inthe novel combination of parts and devices herein shown and described. f

in the accompanying part of this specification,

i., drawing rorming a Figurg 171s a centrai vertical longitudinal section cfa-direct f acting friction spring draft rigging embody?.

lan` view ing my invention. Fig. 2 is a partly in horizontal section and cross section on line 3-3 of Fig-1.

In the drawing, A re resents pieces of the car to is applied, the same the drawing metallic center sills. f

B is the draw-bar, B1 its yoke, Oclongitudinally arranged direct acting draft rigging ig. 3 yis. a

the Whic ,thedraft y being as illustrated springs and D D, the customary side plates or stopcastings, secured to the center sillslor, car frame pieces preferably by y rivets d.'

'castings D have These side plates oreste 2 for the front and front and rear stopsf'd1 -rear followers F F1y tb abut against. Y

li"2 is a longitudinally movable friction shell or case, preferably made integral 'with F1, and having interior len-l the rear follower gitud'inally extending friction faces f,'and coperating'with the ongitudinally movable friction blocks G G, whichv have longitudinally extending exterior friction faces g y in sliding frictional engagementwiththe interior friction face f of the frictionlshellF; The friction shelll F2 at the prtion thereof surroundin the friction bloc` '.,G Gis 'preferably furnished With eXterior'sti-engthening ribs f2, and it is also preferably provided with an opening fiat the to for removal and insertion of the/ rings c. This enables the outer or larger spring O to be made of a larger diameter than the interior. size of the the friction blocks.

portion of the friction shell which surrounds The. friction shell F2 is preferably provided on each side at its bottom with laterally projecting guides or anges f5 to engage the customary removable guide or guides D1 at the bottom of the side plates or stop castings D, which sup ort the followers and other parts of the raft riggingand which are preferably removably secured to the side plates or stop castings D by bolts d3.

. The friction faces g of the friction blocks G are chilled or furnished with chilled or hardened portions g1, preferably to a depth of about one eighth or one quarter of an inch to prevent any tendency of the friction surfaces of the friction blocks and friction shell to eut each other, the friction shell being preferably of malleable iron or steel or other ike meta The friction blocks Gare furnished on their, inner sides with inclines or wedge faces g2, each furnished with a stop shoulder g3, preferably of curved form, and which cooperates with a corresponding stop shoulder g on the ,incline or Wedge face g5 of the wedge or spreader block G1 which is interposed between the friction blocks G G and one of the followers, preferably the front follower,l the spring C being referably interposed between the friction b ocks and the rear follower. The wedgeor spreader block G1 and the co operating friction blocks G G are preferably' a Aso furnished with longitudinally extending guide faces g 97 on the friction blocks rand gffg on the wedge or spreader block. To kee the friction shell, friction blocks and we ge in assembled relation to each other for'convenience in removing the same from and replacing them in the car, while at the same time permitting the friction shell, friction blocks and wedge to have their ynecessary longitudinal or telescopic movements in" respect to each other, I provide the wedge or spreader block G1 with a slot g10 through which a bolt g11 extends7 this guide bolt being secured to the friction shell and fitting in suitable holes therein. 4

H H are the anti-friction rollers interposed between the inclines or wedge faces of the friction blocks and of the Wedgev or spreader block G1.

As each friction blockG has only one stop shoulder for the roller H, theroller is thus' free to turn with a rolling movement on the incline or wedge face g5 of the friction block and as the wedge or spreader block G1 has on. each of its inclines or wedge faces only one sto shoulder for the roller, it leaves the -rol er free to turn with arolling movement on the incline or wedge face of the wedge or spreader block so that the rollers have a true antl-friction action in coperation with the wedge and friction blocksmand cau-se 'the friction devices to act with certainty, efficiency and reliability and without danger of stickgAs in my invention the Wedge G1 has an lantifriction roller on Aeach of its wedging faces interposed between the wedge and the friction blocks, the wedge, which itself is interposed between the draw-bar and the fric- 'neither with the draw-bar nor with the friction blocks, and is consequently entirely free to instantly release or .relieve the pres-V sure, the instant it is relieved from the compressive strain of the draw-bar after each cushioning action. The roller or antifrictional engagement between the wed e and the friction blocks entirely frees bot fricgagement with the surrounding friction shell when the draft rigging releases, so that a quick, certain and reliable release movement bai,` after each cushioning action of the draft rigging or is sufficiently reduced below the power of the spring to enable the spring to react. This entirely prevents all danger of the friction devices sticking s after one failing to properly release or restore the parts to position before anotherblow is received, and thus failing to properly cushion the succeedingblow.

lelaim:- -`1. In a friction draft rigging, the combination with Vthe draw-bar, longitudinally arranged spring, followers and stops for the followers, of alongitudinally movable friction shell, longitudinally movable friction the other en against said friction blocks,a longitudinally movable wedge block between said friction blocks, and anti-friction rollers each lcushioning or compressive action, substantially as specled. Y

` 2. In a friction draft rigging, thecombina.-A tion with a drawbar, its yoke, direct acting spring andfollowers, and stops for the fol.- lowcrs, of a longitudinally movable friction shell, longitudinally movablefriction blocks inside the shell, having on their inner sides extendingl arallel guide faces, a. longitudi and longitridinally extending parallel guide tion devices, is under frictional engagement tion blocksfrom any sticking frictional en` is always assured the moment the compressive load or strain is removed from the draw` cushioning action or compressive blow and blocks inside said shell, said spring reacting l at one lend a ainst said friction shelland at` between said wedge block and said friction the Wedge and one of the friction blocks, and Y rollers on each of its wedging faces tc prevent sticking of the friction devices and lnsure 1,1 5

inclines orfwedge faces and Ilongitudinally I i' I lA nally 'movaj `le wed ge block between said fricf tion blockshaving inclines or wedge faces yrelease movement after each cushioning or compressivev action, substantially as specified. 3. In a friction draft rigging the combination with the draw bar, spring and co-acting friction members, said spring reacting at one end against one of said friction members andi at the other end against the other of said friction members, of a Wedge and anti-friction rollers one on each side of the Wedge and each having a rolling action on both the Wedge and the adjacent friction member, substan-v tiall)T as specified. v

4. in a friction draft rigging, the combinationwvitli'ltlie draw-bar yoke, of a direct acting spring, followers, stops for the followers, a longitudinally movable friction shell, lon i4 tudinally movable friction blocks Within t e shell having wedgefaces, said spring reacting against said friction slr'elLand friction blocks, a longitudinally movable wedge, anti-friction rollers between the Wedge and friction blocks, one on each side of the wedge, and having a rolling action on both. Wedge and block, said Wedge having a slot and said friction shell having a guide pin extending through the slot in the Wedge whereby sairl spring, shell, friction block, Wedge anti rollers are all maintained in cooperative relation with each other, substantially specified ,.SOiih' l?. OCONNOR.

Witnesses lnrinri Anniitis, El. M. M'Uiinii. 

